I'm fairly certain Kyper has posted what system's each game are using on the home page. However just because you asked, Galaxies Edge is a Hero 5 edition game.
besides what is listed in your game is there any other guidelines on what you are looking for the Galaxy's Edge? Like skills required for being a member of NTSF.
any rules on building gadgets?
Is this more star trek or Enterprise or would some other sci fi space opera be more appropriate?
To be a member of the NTSF, would require some additional background information that I won't discuss here because of story reasons.
As far as sci-fi space opera goes, that's where it gets a little wonky. I don't have specific source that I pull from. You are likely to notice obvious references to certain tv shows and video games here and there but for the most part I tend to think up adventures on the fly.
Unless it has to do with my overall story arc, which hasn't been reached it. Right now it is about letting the players explore and let some realizations that they are going be far from home and the only support they have is each other and the rest of the crew.